Plexiglas hw55 Evonik Rohm Acrylic, Polymethyl Methacrylate

Product Description

Product Profile:
PLEXIGLAS® Heatresist hw55 clear is a copolymer based on methyl methacrylate (MMA) with comonomer constituents.

Besides showing the familiar properties of standard PLEXIGLAS® molding compound, such as

high light transmission,

good flowability,

high mechanical strength, surface hardness and abrasion resistance, as well as

excellent weatherability,

PLEXIGLAS® Heatresist hw55 clear offers the additional benefits of

increased heat deflection temperature under load and

improved resistance to stress cacking

optimised inherent color,

AMECA listing.

Application:
PLEXIGLAS® Heatresist hw55 clear is particularly suitable for injection molding of technical items.

Examples:
lighted keys, luminaire covers, fiber optics.

Processing:
PLEXIGLAS® Heatresist hw55 clear can be processed on injection molding machines with 3-zone general purpose screws for thermoplastics.

Physical Form / Packaging:
PLEXIGLAS® Heatresist hw55 is supplied as pellets of uniform size, packaged in two-ply, 25kg polyethylene bags; other packaging on request.

General

Material Status

Commercial: Active

Availability

Europe

Features

Good Colorability

Good Flow

Good Weather Resistance

High ESCR (Stress Crack Resist.)

High Hardness

High Strength

Uses

Fibers

Optical Applications

Protective Coverings

Forms

Pellets

Processing Method

Injection Molding

Multi-Point Data

Isothermal Stress vs. Strain (ISO 11403-1)

Secant Modulus vs. Strain (ISO 11403-1)

Shear Modulus vs. Temperature (ISO 11403-1)

Viscosity vs. Shear Rate (ISO 11403-2)

Physical	Nominal Value	Unit	Test Method
Density		g/cm³	ISO 1183
Melt Volume-Flow Rate (MVR) (230°C/3.8 kg)		in³/10min	ISO 1133
Water Absorption			ISO 62
73°F, 24 hr		%
Equilibrium, 73°F, 50% RH		%
Mechanical	Nominal Value	Unit	Test Method
Tensile Modulus		psi	ISO 527-2/1
Tensile Stress (Break)		psi	ISO 527-2/5
Tensile Strain (Break)		%	ISO 527-2/5
Impact	Nominal Value	Unit	Test Method
Charpy Unnotched Impact Strength (73°F)		ft·lb/in²	ISO 179/1eU
Thermal	Nominal Value	Unit	Test Method
Heat Deflection Temperature
66 psi, Unannealed		°F	ISO 75-2/B
264 psi, Unannealed		°F	ISO 75-2/A
Glass Transition Temperature		°F	IEC 1006
Vicat Softening Temperature		°F	ISO 306/B50
CLTE - Flow (32 to 122°F)		in/in/°F	ISO 11359-2
Flammability	Nominal Value	Unit	Test Method
Flame Rating - UL (0.0630 in)			UL 94
Optical	Nominal Value	Unit	Test Method
Refractive Index			ISO 489
Transmittance²		%	ISO 13468-2
Related Terminology
This supplier and product may also be known by these terms: Plexiglass Product names can be difficult to match. You may have searched any one of these terms to find this product: Plexiglas® hw55, Plexiglas hw55, Plexiglas® , Plexiglas, Plexiglashw55, hw 55, hw55, Acrylic, Acrylic, Polymethyl Methacrylate, Acrylic Polymethyl Methacrylate, Acrylic (PMMA), Acrylic PMMA, pmma, Evonik Rohm, AcrylicPolymethylMethacrylate, AcrylicPMMA, 55hw
Features
Features may also be described by the following terms: Good Flow, High Hardness, Hard, Good Weather Resistance, Weather Resistant, Good Colorability, High Environmental Stress Cracking Resistance, High ESCR, Stress Cracking Resistant, High Strength.
Uses
Uses may also be described by the following terms: Protective Coverings, Protective Covering.

Injection	Nominal Value	Unit
Drying Temperature		°F
Drying Time		hr
Processing (Melt) Temp		°F
Mold Temperature		°F

Notes

¹Typical properties: these are not to be construed as specifications.

²D65

Plexiglas® hw55

Polymethyl Methacrylate Acrylic

Supplied by Evonik Röhm GmbH